Carbureter.



A. WEBER:

CARBURETER.

APPLICATION FILED AUG-20.1912.

Patented Dec. 5,1916.

Inventor Attorneys Witnesses AEAEJDEE WEBER, or LINCOLN, NEBRASKA, Assrenon T0 or LInco N, NEBRASKA.

CUSHMAN Moron WORKS,

To all whom it may concern: 7

Be it known that l[, ALEXANDER WEBER, a citizen ofthe United States, residing at Lincoln, in the county of Lancaster and State of Nebraska, have invented a new and useful carbureter, of which the following is a specification.

This invention relates to carbureters. Carbureters of certain type have heretofore been found objectionable because, when the engine is running at a light load, there is atendency to suck the fuel out of the nozzle and, as the current of air passing through the carbureter is not sufficiently strong to carry this fuel up into the engine, the said fuel falls back into the air passage and either drips out ofthe-bottom of the carbureter or else around the stem of themtake valve. 7

One of the objects of the present invention is to overcome this objectionable feature and to effecta considerable saving of fuel by providing means whereby fuel, after dripping back into the-air passage, will be sucked up to a point above the throttle valve, this action taking place repeatedly until the fuel has been broken'up into particles sufficiently small to insure their passageinto the motor with the air.

With the foregoing and other objects in View which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, can be made within the scope of what is claimed, without departing from the spirit of the invention.

'In the accompanying drawing, which is a section through the carbureter, the preferred form of the invention has been shown.

Referring to the drawing by characters of reference 1 designates the carbureter casing having an air intake 2, a mixture outlet 3, a throttle valve 4, and an air passage 5 The fuel intake nozzle is indicated at 6 and is disposed as ordinarily; These partsare to be found in ordinary carbureters. The fuel nozzle 6 projects into the elbow portion of the IL-shaped air passage, the throttle valve 4 being located within the upwardly projecting arm of said passage.

-7.. This Specification of Letters Patent. Patemtaefl Deng, 5, 1191116, Application filed August 20, 1912. Serial N 0.716386.

That part fthe structure constituting the present invention consists of a small tube? which extends within the air passage 5 from a point above the throttle valve 4 downwardly to a recess or well 8 located in the lowermost portion of the air passage. Thus. it will be seen that during the passage of air through the carbureter while the engine is running at a light load, fuel will be sucked, as heretofore, from the nozzle 6 and, as it is too heavy to be carried by the air into the motor, a portion of the fuel will drip back into the air passage and will gravitate to the recess 8. As the tube 7, ex tends from this recess to a point above the throttle valve 4, and as the suction above this throttle valve is quite strong, it will be seen that the fuel within the recess 8 will be sucked up through the tube 7 and discharged above the throttle valve. Should any of the fuel thus elevated again drip back to the recess 8,-it will a second time be conveyed upwardly through the tube 7. This movement of the fuel will continue as long as the particles are too heavy to be carried off to the motor by theair. When the fuel has ultimately been broken up into sufliciently small particles, it will be carried into the motor.

It Will be noted that the tube 7 is smaller in diameter at its inlet end than at other points, this being due to the fact that the tube is gradually tapered toward its inlet end. Consequently the air entering the tube will travel at a greater velocity than after it passes into the tube and, consequently, while the current of air passing through the inlet end of the tube will be sufficiently strong to carry upwardly the heavy fluid which has accumulated at the lower end of the tube 7, the said current is not sufficiently strong to carry through the tube any but finely divided fuel.' Consequently, should any particles be carried upwardly within the tube before they are sufficiently divided, they will drop back into the tube to be again met by the inrushing current of air of high velocity and again carried up in the tube operation will be continued in the tlibe until the liquid fuel has been finely divided whereupon the current in the largest portion of the tube will be sufficient to elevate the finely divided fuel into the outlet 3.

Briefly considered, thepresent carbureter embodies a casing or body 1 having an ll.-

Thus, when the member 2 is removed, access is had to the lower end of the tube 7, and the parts can be readily examined and cleaned. This also facilitates the bending of the lower end of the tube to the proper point.

What is claimed is A carburet'er embodying a casing having an L-shaped air passage, a fuel nozzle projecting into the elbow portion of said passage, a throttle valve within the upwardly projecting arm of said passage, an air intake member attached to the casing in communication with the lower arm of said passage, the adjacent portions of said member and casing having complementing depressions providing a well at the bottom of said lower arm for receiving fuel, and a tube within said passage having its lower end curved downwardly into said well and having its upper end terminating above said valve.

In testimony that I claim the foregoing as my own, I have hereto aflixed my signature in the prsence of two witnesses.

ALEXANDER WEBER.

Witnesses: 1

GRACE E. MILLS, Nina VAN OSTRAND. 

